Revert 245684 "[telemetry] bitmaptools as a standalone executable"

Broke gpu_tests step on Android Debug GPU bot; see crbug.com/323813 for details.

> [telemetry] bitmaptools as a standalone executable
> 
> The C++ binary implements simple per-pixel algorithms for SpeedIndex
> computation. This allows us to achieve near real-time processing without
> bringing external dependencies.
> 
> The bitmaptools binary needs to be built before it can be used.
> The overhead of spawning a child process for each frame is about 3ms.
> 
> BUG=323813
> TEST=telemetry bitmap_unittest
> 
> Review URL: https://codereview.chromium.org/136793022

TBR=szym@chromium.org

Review URL: https://codereview.chromium.org/138143020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245712 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 245712